Answer:
C. multiplication
Step-by-step explanation:
P= ()
E=^
M=x
D=/
A=+
S=-
simplify (2xy)3x2 will give brainliest.
Answer:
6x³y
Step-by-step explanation:
(2xy) * 3x²
We know that 2 * 3 = 6 and x * x² = x¹ * x² = x⁽¹⁺²) = x³ so the final answer is 6x³y.
in each question,first make an inequality, then solve the inequality
1) A rectangle is 8cm long and b cm broad.find the range of values of b if the perimeter of the rectangle is not greater than 50 cm and not less than 18cm
2) the sides of a triangle are x cm,x+3 cm, find the lowest value of x.
Answer:
a) The perimeter of a rectangle is written as:
P = 2*L + 2*W
where L is the length amd W is the width (broad in this case).
here we have:
L = 8cm and W = b
then the perimeter is:
P = 2*8cm + 2*b
And we know that:
18cm ≤ P ≤ 50cm
where ≤ is used because there is written "not more" and "not less", so the equalities are allowed
now we can replace P by the above equation:
18cm ≤ 16cm + 2*b ≤ 50cm
now we can subtract 16cm in each side and get:
18cm - 16cm ≤ 2*b ≤ 50cm - 16cm
2cm ≤ 2*b ≤ 34cm
Now we can divide each side by 2.
1cm ≤ b ≤ 34cm/2 = 17cm
1cm ≤ b ≤ 17cm.
b) Here we have missing information, so this can not be answered.
(only knowing that one side length is x, and another side length is x + 3cm, we can know that x > 0cm, so the minimum value of x is really close to 0cm)
Which statement best describes the relationship between storage space and number of music files?
Answer:
As the number of files increases, the storage space used increases.
Answer:D
Step-by-step explanation:
Katherine bought 7 yards of streamers, 25 balloons, and five spools of ribbon to use for party decorations. Each spool contained 500 feet of ribbon. What was the total length of the streamers and ribbon Katherine bought?
what is 5.19615242 rounded to
Find the number in the tenth place 1 and look one place to the right for the rounding digit 9 . Round up if this number is greater than or equal to 5 and round down if it is less than 5 .
5.2
14. If EF bisects CD, CG = 5x - 1, GD = 7x - 13, EF = 6x - 4, and GF = 13, find EG.
3. EF = 6-a. and Cr -13, cihad ES
Greetings from Brasil....
As stated in the statement of the question, EF is a bisector of CD, so point G is the median point of CD, so CG = GD
5X - 1 = 7X - 13
X = 6
EF = EG + GF
6X - 4 = EG + 13 x = 6, so
6·6 - 4 = EG + 13
EG = 19(see attachment)
questions on the picture
Answer:
x^1/4
Step-by-step explanation:
[tex]\frac{x^{\frac{1}{2}}}{x^{\frac{1}{4}}}\\\\\mathrm{Apply\:exponent\:rule}:\quad \frac{x^a}{x^b}=x^{a-b}\\\\\frac{x^{\frac{1}{2}}}{x^{\frac{1}{4}}}=x^{\frac{1}{2}-\frac{1}{4}}\\\\\mathrm{Simplify}\:x^{\frac{1}{2}-\frac{1}{4}}:\\\\\quad x^{\frac{1}{4}}[/tex]
find the first three terms of this sequence tn=4n²+2
Answer:
Step-by-step explanation:
finding the first term by putting n=1
t(1)=4.[tex](1)^{2}[/tex] +2 = 4.1 +2 = 4+2 = 6
finding the second term by putting n=2
t(2)=4.[tex](2)^{2}[/tex] +2 = 4.4 +2 = 16+2 = 18
finding the third term by putting n=3
t(3)=4.[tex](3)^{2}[/tex] +2 = 4.9 +2 = 36+2 = 38
hence first three terms are:
6,18,38,......,4[tex]n^{2}[/tex] +2
8+ Z8 = 0
What’s the answer
Answer:
z = -1
Step-by-step explanation:
0 = 8z + 8
-8 = 8z
-8/8 = z
z = -1
check:
0 = 8*-1 + 8
0 = -8 + 8
Define square root. Give an example.
Answer:
A square root of a number is a value that, when multiplied by itself, gives the number.
Example: 4 × 4 = 16, so a square root of 16 is 4.
The symbol for a square root is √ which always means the positive square root.
Example: √36 = 6 (because 6 x 6 = 36)
There are 10 cups of coffee in each coffee pot and 12 donuts per box, how many cups of coffee and how many donuts will be available if I make two pots of coffee and 3 boxes of donuts?
Answer:
There are 20 cups of coffee in two pots of coffee and 36 donuts in 3 boxes of donuts
Step-by-step explanation:
The rule of three or is a way of solving problems of proportionality between three known values and an unknown value, establishing a relationship of proportionality between all of them. That is, what is intended with it is to find the fourth term of a proportion knowing the other three.
If the relationship between the magnitudes is direct, that is, when one magnitude increases, so does the other (or when one magnitude decreases, so does the other), the direct rule of three must be applied as follow:
a ⇒ b
c ⇒ x
So [tex]x=\frac{c*b}{a}[/tex]
In this case, the rule of three can be applied as follows:
if in 1 coffee pot there are 10 cups of coffee, in 2 pots of coffee how many cups of coffee are there?[tex]amount of cups of coffe=\frac{2coffe pots*10 cups of coffee}{1 coffe pot}[/tex]
amount of cups of coffe= 20
If there are 12 donuts in 1 box, how many donuts are there in 3 boxes?[tex]amount of donuts=\frac{3 boxes*12 donuts}{1 box}[/tex]
amount of donuts= 36
There are 20 cups of coffee in two pots of coffee and 36 donuts in 3 boxes of donuts
A car travels for 10 minutes
at 30 km/h and then for
20 minutes at 45 km/h. What is the average speed for the whole journey
Answer:
40 km/h
Step-by-step explanation:
s = ut where s - Distance
u - Speed
t - Time
when t = 10 min
= 10/60 hours
S1 = 30 * 10/60
= 5km
when t= 20 min
= 20/60 hours
S2 = 45 *20/60
= 15 km
Then total distance = S1 + S2
= 5 + 15
= 20 km
Total time period = (10 + 20 ) / 60 hours
= 1/2 hours
Then average speed = U
S = UT
U = S/ T
= 20/ 0.5 km/ h
= 40 km/ h
George said that 6 x 10 to the 3 power is 180. do your Agree of Disagree? if you disagree explain the mistake he made and the correct answer. (HELP)
Answer:
The correct answer is 6000
Step-by-step explanation:
I disagree because 10 to the 3rd power = 1000 x 6 = 6000
The mistake he made was that George multiplied all of the number so, 6 x 10 x 3 = 60 x 3 = 180.
Find the value of y
(PlZ help me). :)
Answer:
[tex]\huge \boxed{y=\sqrt{30} }[/tex]
Step-by-step explanation:
We can use ratios to solve for the problem.
y/5 = 6/y
Cross multiply.
y × y = 5 × 6
y² = 30
Take the square root of both sides.
y = [tex]\sqrt{30}[/tex]
7/10 +2/15 = 2 3/3+ 3 1/2= 15/16 - 11/12 = 11/15 - 7/20
Answer:
Addition and Subtraction of Fractions · 1. Add: (i) 7/ 10 + 2/15 (ii) 2²/₃ + 3¹/₂ · 2. Simplify: (i) 15/16 – 11/12 (ii) 11/15 – 7/20 · 3. Simplify: 4⁵/₆ – 2³/₈ + .
Answer:
7/10 + 2/15= 5/6
2 3/3 + 3 1/2= 6 1/2
15/16 - 11/12= 1/48
11/15 - 7/20= 23/60
Step-by-step explanation:
When adding or subtracting fraction with different denominators, we must find there LCM to be their new denominators. Then divide the new denominator by the old denominator, do for both fractions, then multiply the answer with the numerator, do for both fractions to get their new numerators. Then add or subtract the fractions. Then simplify the answer if needed.
Ex 1:
The LCM of 10 and 15 is 30
7/10 + 2/15
(30 ÷ 10=3, 3 × 7= 21)(30 ÷ 15= 2, 2 × 2=4)
=21/30 + 4/30= 25/30 or 5/6
With whole numbers, add the two whole numbers together. Then n add the fractions. Lastly add both of the answers together.
Ex:
The LCM of 3 and 2 is 6
2 3/3 + 3 1/2
=2 + 3= 5
= 3/3 + 1/2= 9/6 or 1 3/6 or 1 1/2
= 5 + 1 1/2
= 6 1/2
Always remember to simplify if possible or necessary.
I hope this helps! I'm sorry if it's wrong or too complicated.
Point B lies between points A and C on Line segment A C . Let x represent the length of segment AB in inches.
Answer:
5,5,15
Step-by-step explanation:
The midpoint of JK is M(5, 6). One endpoint is J(7, 7). Find the coordinates of the other
endpoint K.
Write the coordinates as decimals or integers.
K=
= (+,)
Answer:
K(3, 5)
Step-by-step explanation:
let K(x, y)
then x + 7 = 5*2 and y + 7 = 6*2 by the midpoint theorem.
solving, x = 3, y = 5
Find the output (y) of the function y=6x+4 if the input (x) is 2
Answer:
f(2) = 16
or
y = 16
Step-by-step explanation:
Step 1: Write out function
y = 6x + 4
Step 2: Define variable for problem
x = 2
Step 3: Plug into function f(x)
f(2) = 6(2) + 4
f(2) = 12 + 4
f(2) = 16
Step 4: Change f(2) to y
y = 16
Two trains leave stations 342 miles apart at the same time and travel toward each other. One train travels at 105 miles per hour while the other travels at 85 miles per hour. How long will it take for the two trains to meet?Do not do any rounding.
Answer:
1.8 hours.
Step-by-step explanation:
It is important to note that:
Speed = Distance ÷ Time
We have two trains.
Step 1
We have to find the distance that each train travelled.
Since Speed = Distance ÷ Time
Distance = Speed × Time
First train
It travels at 105 miles per hour
Distance travelled by first train =
105 × x hours
= 105x miles
Second Train
It travels at 85 miles per hour
Distance travelled by the second train = 85 miles × x hours
= 85x miles
We are told that: the two trains leave stations 342 miles apart at the same time and travel toward each other
Hence, the time it would take each train to meet each other is calculated as:
105x + 85x = 342 miles
190x = 342 miles
x = 342/190
x = 1.8 hours.
A biased coin is tossed 4 times. The probability of heads on any toss is 0.4. Let X denote the number of heads that come up. Calculate: (i) ( ≤ 2) (ii) (1 ≤ ≤ 3)
Answer:
0.8208 ; 0.8448
Step-by-step explanation:
Given the following :
Number of tosses = 4
Probability of head on any toss :
P(head) = 0.4
Therefore ;
(1 - p(head)) = (1 - 0.4) = 0.6
Binomial probability :
P(X) = nCx * P^x * (1 - P) ^(n-x)
Where:
n = number of trials ; x = number of success ; P = probability of success.
P(X≤2) = P(0) + P(1) + p(2)
using binomial probability calculator to ensure faster computation:
P(X≤2) = 0.1296 + 0.3456 + 0. 3456
= 0.8208
B)
P(1 ≤ X ≤ 3) = P(1) + P(2) + P(3)
P(1 ≤ X ≤ 3) = 0.3456 + 0.3456 + 0.1536
= 0.8448
Simplify. 1/2−3(1/2+1)^2
Answer:
-6.25
Step-by-step explanation:
The answer is -6.25.
what is the answer to "sin2x=sinx" ?
Answer:
Think of the double angle formula for
sin
2
x
Explanation:
sin
2
x
=
sin
x
2
sin
x
cos
x
=
sin
x
2
sin
x
cos
x
−
sin
x
=
0
sin
x
(
2
cos
x
−
1
)
=
0
Solution A:
sin
x
=
0
⇒
x
=
k
π
,
k
∈
Z
Solution B:
2
cos
x
=
1
⇒
cos
x
=
1
2
,
x
=
±
π
3
+
2
k
π
=
π
3
(
6
k
±
1
)
,
k
∈
Z
∴
x
=
k
π
or
x
=
π
3
(
6
k
±
1
)
,
k
∈
Z
Step-by-step explanation:
Answer:
[tex]\bold{x=\frac\pi3+2k\pi\quad \vee\quad x=\frac{5\pi}3+2k\pi\quad \vee\quad x=k\pi\ ,\quad k\in\mathbb Z}[/tex]
Step-by-step explanation:
[tex]\sin 2x=\sin x\\\\\sin2x - \sin x=0\\\\2\sin x\cos x-\sin x=0\\\\(2\cos x-1)\sin x=0\\\\2\cos x-1=0\qquad\qquad\qquad\qquad or\qquad \sin x=0\\\\2\cos x=1\quad\qquad\qquad\qquad\qquad\ or\qquad \sin x=0\\\\\cos x=\frac12\qquad\qquad\qquad\qquad\qquad or\qquad \sin x=0\\\\x=\frac\pi3+2k\pi\quad \vee\ \ x=\frac{5\pi}3+2k\pi\quad\ \ \vee\ \ x=0+k\pi\ ,\quad k\in\mathbb Z[/tex]
If the streets of a city are straight lines and the intersections are points, show how Principle 2 and Principle 3 might be illustrated -(plane geometry Abeka second edition)
Step-by-step explanation:
In the plane geometry Abeka, second edition, it is given :
Principle 2 states that between any two points, only one straight line can be drawn.
And according to principle 3 two straight lines interacts at one point only.
Thus this can be well illustrated by two straight lines which are represented by the streets of a city and these two streets intersects at a point.
5(7x+8y) simplified
Answer:
35x+40y
Step-by-step explanation:
1. expand the terms by multiplying 5 by what's inside the parenthesis, so multiply by 7x and 8y and add them. So you get 35x+40y
Answer:
35x +40y
Step-by-step explanation:
5(7x+8y)
Distribute
5*7x + 5*8y
35x +40y
what transformation(s) is taking place i’ll mark u the brainliest if u help
Answer:
Reflection, Translation, and possibly Rotation
Which of the following are true?
Answer: c).
Both options are true. You can see that the whiskers of data set 2 (The lines extending on either side of the box plots) represent a much larger range of data than data set 1, and that the median in data set 2 (the line down the middle of the boxes) is greater than data set 1.
Hope this helps!
Evaluate................. (-7)²
Answer:
49
Step-by-step explanation:
(-7)² = (-7)(-7) = 49
Parvin often cleans the dishes with her mother she can clean 17 plates in 10 minutes how many plays country clean in different amounts of time
There are 10 playing cards in a bag. 7 of those cards are spades.
What is the probability of picking a spade randomly from the bag?
Answer:
P(spades) = 7/10
Step-by-step explanation:
there are 10 different cards that can be picked, out of which what we want to pick is spades which are 7. and so there are 7 chances that we will get to pick spades out of all the 10 possibilities. hope it is easy to understand
a bus is leaving the bus station at 5:45 p.m. and it takes 2 days 6 hours 30 minutes to reach a destination if the bus leaves on Friday what will be the day and time when it arrive it destination?
Answer:
Monday, at 12:15 AM
Step-by-step explanation:
Do this question in parts. First, add 2 days to Friday to get Sunday at 5:45 PM. Then, add 6 hours to 5:45 to get 11:45 PM. Finally, add 30 minutes to 11:45 PM. That takes you to 12:15, and since you passed midnight, Sunday is now Monday. That means the bus arrives Monday, at 12:15 AM.